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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 11, Problem 9E
Textbook Problem
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How does a hot air balloon function? How is windy coastal weather related to Charles’s law?

Interpretation Introduction

Interpretation:

The function of hot air balloon is to be explained, and the relation between windy coastal weather and Charle’s Law is to be described.

Concept Introduction:

According to Archimedes principle, any object suspended in a fluid, is acted upon by an upward buoyant force which is equal to the weight of the fluid that has been displaced by the object. A hot air balloon with a vacuum inside is lifted by buoyant force because it weighs less than air.

The rising of air due to heat is called convection; the earth is heated unevenly. According to Charles law that part of the air which heats up faster will expand faster, along with a drop in pressure. As the air above the sea is cooler (high pressure), air flows from a high pressure region to the low pressure region.

Explanation of Solution

a) Hot-air balloons float on the basis of the principles of buoyancy, the upward force exerted by air.

The balloon is lifted due to the buoyant force created by the cooler air. According to Archimedes' principle, any object suspended in a fluid is acted upon by an upward buoyant force equal which is to the weight of the fluid that has been displaced by the object. A hot air balloon with a vacuum inside is lifted by the buoyant force because it weighs less than air.

b) Convection occurs when the earth is heated unevenly.

The air above and below the earth are heated at the same rate. According to Charles Law that part of the air which gets heated faster will expand faster...

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Chemistry In Focus
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